THE LAMBDAMETER DETECTOR

The ''Lambdameter'' detector was specially designed for the study of c umulative LAMBDA0-hyperons in the region of fragmentation of a target nucleus at rest in hadron-nucleus interactions under various initial c onditions (energy and species of primary particle, atomic number of th e target nucleus, emission angle of a LAMBDA0-particle). The detector is used to measure the spectra of LAMBDA0-particles in the kinetic ene rgy range T from 40 to 150 MeV with a almost-equal-to 5 MeV resolution , a relative systematic error of dsigma/dT within the experiment of le ss-than-or-equal-to 5%, and an absolute systematic error of less-than- or-equal-to 10%. It also makes it possible to determine production cro ss sections (yields) with the same accuracy and polarization with an a ccuracy of better than 4%. Cumulative lambdas were detected at an angl e of 90-degrees in the lab system in the first run of the ITEP acceler ator.